*{
    margin: 0;
    padding: 0;
}
body{
    height: 100vh;
    background: #4c4c4c url('./image/3.jpg');
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hidden {
    display: none;
}

.start-button {
    padding: 15px 30px;
    font-size: 1.5em;
    background: linear-gradient(90deg, #ff6b6b, #e75480);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(231, 84, 128, 0.3);
    transition: all 0.3s ease;
    font-family: 'Segoe UI', '微软雅黑', sans-serif;
    letter-spacing: 2px;
}

.start-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(231, 84, 128, 0.4);
}

.start-button:active {
    transform: translateY(1px);
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.wrapper{
    display: flex;
    width: 850px;
}

.video-desc {
    width: 765px;
    font-size: 1.2em;
    color: #e75480;
    background: linear-gradient(90deg, #fff0f6 0%, #f9e6ff 100%);
    border-radius: 8px;
    padding: 12px 20px;
    margin-bottom: 15px;
    text-align: center;
    font-family: 'Segoe UI', '微软雅黑', sans-serif;
    box-shadow: 0 2px 8px rgba(231, 84, 128, 0.08);
    letter-spacing: 1px;
    box-sizing: border-box;
}

.flex{
    width: 765px;
    height: 430px;
}

.speed{
    flex: 1;
    display: inline-block;
    background: #fff;
    margin: 10px;
    border-radius: 50px;
    overflow: hidden;
}

.speed-bar{
    width: 100%;
    height: 16.3%;
    background: linear-gradient(to bottom, #e01919, #d30bb9);
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
}